Silver halide photosensitive material

ABSTRACT

The present invention relates to a silver halide photographic material comprising a paper support having resin layers coated on both sides of a base paper, and in particular, to a silver halide photographic material exhibiting superior glossiness and improved sharpness, long-term stability, fingerprint resistance and pressure resistance. The silver halide photographic material comprising on one side of the paper support having resin coat layers on both sides of a base paper, one or more light-sensitive layers and one or more light-insensitive layers, wherein after the photographic material of an L-size (having a length of 89 mm in a machine direction of the base paper and a length of 127 mm vertical to the machine direction) is processed, the photographic material exhibits an image clarity (C-value) of 20% to 60% which is determined using a 1.0 mm optical wedge in accordance with JIS K 7105; and the photographic material comprising a light-insensitive hydrophilic colloid layer between a light-sensitive layer closest to the support and the support.

TECHNICAL FIELD

The present invention relates to a silver halide photographic materialhaving a paper support having resin layers coated on both sides of abase paper, and in particular, to a silver halide photographic materialexhibiting superior glossiness and improved sharpness, long-termstability, fingerprint resistance and pressure resistance.

TECHNICAL BACKGROUND

Recently, in the field of silver halide photographic materials,requirements for images of further high quality have been increasedalong with spread of color photographic materials. In such a situation,studies of color reproduction, stability, enhancement of sharpness,glossiness and the like have been made more broadly than ever in silverhalide photographic materials used for color prints, so-called colorpaper.

There are generally known irradiation and halation as a factor affectingsharpness. The former is brought about by incident light scattered bysilver halide grains or oil droplets of a coupler or the like, dispersedin gelatin film, the extent of which is mainly dependent of gelatincontent, silver halide content and oil droplet content; the latter isdependent of the extent of light reflection from the support, dependingon reflectance or refractive index of the support.

There are known methods of providing, an antihalation layer to preventhalation. Improvements thereof are described, for example, in JP-A Nos.55-33172, 59-193447, 59-151650 and 62-33448 (hereinafter, the term, JP-Arefers to Japanese Patent Application Publication). However, thesemethods cause a marked lowering in sensitivity along with enhancedsharpness so that it was difficult to achieve enhanced sharpness withmaintaining practically sufficient sensitivity by only such a means.

There have been studied improvements of supports. Recently, for thepurpose of shortening the processing time, a water-resistant support inwhich the substrate paper surface is laminated with polyolefin resin orthe like, and so-called RC paper has been used as a support for colorprint photographic material, in which to enhance sharpness andwhiteness, white pigments such as titanium oxide are dispersed in thepolyolefin resin layer on the emulsion layer side of the support. Toenhance sharpness, as disclosed in JP-A Nos. 54-46035, 64-18144 and2-71256, it was effective to combine a technique of using RC paper inwhich a white pigment was filled at a much more amount in the polyolefinresin layer of the emulsion-coated side. However, there weredisadvantages such as a lowering of smoothness of the polyethylene layersurface and deteriorated adhesion between the polyethylene layer and theemulsion layer.

Apparent glossiness is related to “image clarity” the measurement ofwhich is defined in JIS K 7105 and JIS H8686 and photographic printsexhibiting high image clarity are strongly desired. Low image clarityresults in a quality deficient in high-grade feel. On the contrary, highimage clarity in the case of color paper can obtain prints with glossyfeeling, which is liked by general users. However, strong gloss due tolight reflection often makes it difficult to observe printed images.Further, because of a high smoothness, for example, adhesion offingerprints becomes easy in the course of preparing prints or whenpeople observe photographic prints with taking them in hands, resultingin eventual deteriorated quality.

Silver halide photographic materials are treated under variousenvironments and requirements for storage stability or physicalproperties of photographic prints have increased. For example, there wasa problem that when some pressure is continuously applied streakily ontothe surface of color paper during the course of handling and after thecolor paper is processed, streaky pressure marks are produced only onthe pressure-applied portion, and it remains a strong desire to overcomesuch problems.

There was also proposed a method in which a hydrophilic colloid layercontaining a white pigment is provided between the support of a silverhalide photographic material and a silver halide emulsion layer toimprove rapid processability, sharpness, sensitivity stability and dyeforming ability (as described, for example, in patent documents 1 to 4).

However, any one of the proposed methods described above is mainlydirected toward improvement of sharpness or improvement of processstability under an environment of rapid access and nothing is taught orsuggested with respect to the foregoing problems, such as image clarity,storage stability and pressure resistance.

Patent document 1:

JP-A No. 6-35149 (scope of patent claims)

Patent document 2:

JP-A No. 7-134358 (scope of patent claims)

Patent document 3:

JP-A No. 8-272041 (scope of patent claims)

Patent document 4:

JP-A No. 8-304960 (scope of patent claims)

DISCLOSURE OF THE INVENTION

The foregoing object of the invention can be accomplished by thefollowing constitutions.

(1) A silver halide photographic material comprising on one side of apaper support having resin coat layers on both sides of a base paper oneor more light-sensitive layers and one or more light-insensitive layers,wherein after the photographic material of an L-size (having a length of89 mm in a machine direction of the base paper and a length of 127 mmvertical to the machine direction) is processed, the photographicmaterial exhibits an image clarity (C-value) of 20% to 60% which isdetermined using a 1.0 mm optical wedge in accordance with JIS K 7105;and the photographic material comprising a light-insensitive hydrophiliccolloid layer between a light-sensitive layer closest to the support andthe support.

(2) The silver halide photographic material described in (1), whereinthe light-insensitive hydrophilic colloid layer contains amercapto-heterocyclic compound.

(3) The silver halide photographic material described in (1), whereinthe light-insensitive hydrophilic colloid layer contains a thiosulfonicacid compound.

(4) The silver halide photographic material described in (1), whereinthe light-insensitive hydrophilic colloid layer contains a latex.

(5) The silver halide photographic material described in (1), whereinthe light-insensitive hydrophilic colloid layer contains a lipophiliccompound dispersion.

(6) The silver halide photographic material described in (1), whereinthe light-insensitive hydrophilic colloid layer contains a titaniumoxide.

(7) The silver halide photographic material described in (1), whereinthe light-insensitive hydrophilic colloid layer contains a colloidalsilver.

(8) The silver halide photographic material described in any of (1) to(7), wherein the light-sensitive layer closest to the support is ablue-sensitive layer containing silver halide grains having an averagegrain size of 0.35 to 0.60 μm.

PREFERRED EMBODIMENT OF THE INVENTION

As a result of studies of the foregoing problems, the present inventionhas come into being by finding that a silver halide photographicmaterial comprising on one side of a paper support having resin coatlayers on both sides of a base paper one or more light-sensitive layersand one or more light-insensitive layers, wherein after the photographicmaterial of an L-size (having a length of 89 mm in a machine directionof the base paper and a length of 127 mm vertical to the machinedirection) is processed, the photographic material exhibits an imageclarity (C-value) of 20% to 60% which is determined using a 1.0 mmoptical wedge in accordance with JIS K 7105, and the photographicmaterial comprising a light-insensitive hydrophilic colloid layerbetween a light-sensitive layer closest to the support and the support,exhibits an appropriate glossiness and resulting in improved sharpness,long-term storage stability, fingerprint resistance and pressureresistance.

It was further found that the light-insensitive hydrophilic colloidlayer between a light-sensitive layer closest to the support and thesupport containing a mercapto-heterocyclic compound, a thiosulfonic acidcompound, a latex, a lipophilic compound dispersion, a titanium oxide ora colloidal silver resulted in further enhanced effects. It was alsofound that the use of silver halide grains having an average grain sizeof 0.35 to 0.60 μm in the blue-sensitive layer resulted in furtherenhanced effects.

The present invention will be described in detail.

One feature of the silver halide photographic material using the papersupport having resin coat layers on both sides of a base paper is thatafter being processed, the photographic material of an L-size (having alength of 89 mm in the machine direction of the base paper and a lengthof 127 mm vertical to the machine direction) exhibits an image clarity(C-value) of 20% to 60% which can be determined using a 1.0 mm opticalwedge in accordance with JIS K 7105.

First, there will be described a paper support having resin coat layerson both sides of a base paper.

The paper support having resin-coated layers on both sides of a basepaper is preferably a paper support laminated with polyolefin on bothsides of the base paper, and more preferably a polyethylene-laminatedpaper support.

Base paper used for the paper support can be prepared using wood pulp asthe main raw material and optionally a synthetic pulp such aspolypropylene and synthetic fiber such as nylon or polyethylene.Examples of wood pulp include LBKP, LBSP, NBKP, NBSP, LDP, NDP, LUKP,and NUKP, and LBKP, NBSP, LBSP, NDP and LDP which have a relatively highshort fiber content, are preferred, provided that the proportion of LBSPand/or LDP is preferably from 10% to 70% by weight.

Of the foregoing pulps, chemical pulp having a relatively low impuritycontent (such as sulfate pulp or sulfite pulp) is preferably used, and apulp which has been subjected to a bleaching treatment to enhancewhiteness, is also advantageous. Base paper may optionally incorporatesizing agents such as a higher fatty acid and alkylketene dimer, whitepigments such as calcium carbonate, talc and titanium oxide, paperstrength-enhancing agents such as starch, polyacrylamide and polyvinylalcohol, fluorescent brighteners, moisture-retaining agents such aspolyethylene glycol, dispersing agents and softening agents such as aquaternary ammonium salt.

The freeness of a pulp used in paper making is preferably from 200 to500, as defined in CSF. With respect to fiber length after beating, thesum of 24-mesh residue and 42-mesh residue, as defined in JIS-P-8207 ispreferably from 30% to 70% by weight; and the 4-mesh residue ispreferably not more than 20% by weight. The weight of base paper ispreferably from 30 to 250 g/m², and more preferably from 50 to 200 g/m².The thickness of the base paper is preferably from 40 250 μm. Base papermay be subjected to a calendering treatment to provide enhancedsmoothness during or after paper-making. The density of base paper isgenerally from 0.7 to 1.2 g/cm³ (JIS-P-8118). The stiffness of basepaper is from 20 to 200 g based on the condition defined in JIS-P-8118.The base paper surface may be coated with a surface sizing agent and thesame sizing agents as those incorporated to the base paper are usable asa surface sizing agent. The pH of base paper is preferably from 5 to 9when determined by the hot-water extraction method defined inJIS-P-8113.

Polyethylene covering the surface or back surface of base paper ismainly comprised mainly of low density polyethylene (LDPE) and/or highdensity polyethylene (HDPE), and LLDPE (linear low density polyethylene)or polypropylene may be used partially. Specifically, in thepolyethylene layer of the light-sensitive layer side, rutile or anatasetype titanium oxide is preferably added into polyethylene to improveopacity or whiteness, as when used for the photographic print paper. Thetitanium oxide content is usually from 3% to 20% by weight, andpreferably from 4% to 13% by weight, based on polyethylene.

Polyethylene-coated paper is usable as glossy paper, or matted orsilk-finished one used in conventional photographic print paper, whichis obtained by performing a so-called embossing treatment when coatingpolyethylene through extrusion onto the base paper surface.

With respect to polyethylene used on both sides of the base paper, thepolyethylene layer thickness is usually 20 to 40 μm and 10 to 30 μmrespectively for the light-sensitive layer side and the back layer side.

The foregoing polyethylene-coated paper support preferably hascharacteristics as below:

1. tensile: a strength defined in JIS=P-8113, preferably having 20 to300N in the machine direction and 10 to 200N in the cross direction;

2. tear strength: preferably 0.1 to 20N in the machine direction and 2to 20N in the cross direction, measured by the method defined inJIS-P-8116;

3. compression elastic modulus ≧98.1 Mpa;

4. surface Bekk smoothness: preferably 20 sec. or more for the glossysurface under the condition defined in JIS-P-8119, or it may be lessthan this value for the embossed surface;

5. surface roughness: the surface roughness defined JIS-P-0601 ispreferably not more than 10 gum for maximum height per reference lengthof 2.5 mm;

6. opacity: at least 80%, preferably from 85% to 98%, when measuredaccording to the method defined in JIS-P-8138;

7. whiteness: L*, a* and b*, defined in JIS-Z-8729 are preferably L*=80to 95, a*=−3 to +5 and b*=−6 to +2;

8. surface glossiness: 60° specular glossiness defined in JIS-Z-8741 ispreferably from 10% to 95%;

9. Clark stiffness: support having a Clark stiffness of preferably 50 to300 cm²/100 in the transport direction of the recording medium;

10. moisture content of core paper: usually from 2% to 100% by weight,preferably 2% to 6%, based the core paper.

In the invention, the silver halide photographic material comprising onthe foregoing support at least one light-sensitive layer and at leastone light-insensitive layer, characterized in that after thephotographic material of an L-size (having a length of 89 mm in themachine direction of the base paper and a length of 127 mm vertical tothe machine direction) is processed, the photographic material exhibitsan image clarity (C-value) of 20% to 60% (preferably 20% to 50%, andmore preferably 20% to 30%), which is determined using a 1.0 mm opticalwedge in accordance with JIS K 7105. An image clarity (C-value) fallingwithin this range, as defined above not only retains sufficientglossiness and a feel of high quality but also improves fingerprintresistance. Advantageous effects of the invention can be effectivelydisplayed in the L-size having been cut to a length of 89 mm in themachine direction of the base paper and a length of 127 mm vertical tothe machine direction.

With respect to image clarity (C-value), of image clarities defined inJIS K 7105, the value determined by a reflection method using 1.0 mmoptical wedge is defined as a C-value, which is used as a measure ofimage clarity.

The image clarity defined in the invention represents performance offilm surface to transform an image facing the film surface, which is avalue indicating how accurately an incident image is reflected orprojected on the image surface. The more accurately a reflection imageis given with respect to an incident image, the higher the image claritybecomes, resulting in an increase in C-value. This C-value indicatescombined effects of specular glossiness and surface smoothness. Thus,.the higher the reflection degree or the higher the smoothness, thehigher C value.

A method for achieving an image clarity (C-value) of 20% to 60% is notspecifically limited and it can be achieved by an appropriatecombination of a method of making an Sra value (surface averageroughness) of a support 0.1 to 0.3 μm, a method of adding colloidalsilica to a protective layer and the like.

One feature of the silver halide photographic material is that at leasta light-insensitive layer is provided between a support and thelight-sensitive hydrophilic colloid layer closest the support, wherebyadvantageous effects of the invention is fully displayed.

In the invention, the foregoing light-insensitive layer hydrophiliccolloidal preferably contains a mercapto-heterocyclic compound.

The mercapto-heterocyclic compound is preferably a compound representedby the following formula (I):

wherein Z is an atomic group necessary to form a 5- or 6-memberedheterocyclic ring, or a 5- or 6-membered heterocyclic ring condensedwith a benzene ring; M is a cation.

Examples of a 5- or 6-membered heterocyclic ring, or a 5- or 6-memberedheterocyclic ring condensed with a benzene ring include a imidazolering, a tetrazole ring, a thiazole ring, an oxazole ring, abenzothiazole ring, a benzotriazole ring, and a benzimidazole ring.Examples of a cation of M include hydrogen, sodium, potassium andammonium cations. The a 5- or 6-membered heterocyclic ring, or the 5- or6-membered heterocyclic ring condensed with a benzene ring may besubstituted by a substituent. Examples of such a substituent include analkyl group, an alkenyl group, an aryl group, a heterocyclic group, ahalogen atom, an alkoxyl group, an aryloxy group, an alkoxycarbonylgroup, an aryloxycarbonyl group, a sulfonamide group, a sulfamoyl group,an ureido group, an acyl group, a carbamoyl group, an amido group, asulfonyl group, an amino group, nitro group, carboxyl group, and hydroxygroup. These groups may be further substituted by substituents describedabove.

Specific examples of a mercapto-heterocyclic compound as shown below butare by no means limited to these.

In the silver halide color photographic material of the invention, thelight-insensitive hydrophilic colloid layer preferably contains athiosulfonic compound.

Thiosulfonic compounds usable in the invention are preferably a compoundrepresented by the following formula (II):R₂₁—SO₂S—M₂₁   formula (II)

The thiosulfonic acid compound represented by the foregoing formula (II)may be a free acid or its salt.

An aliphatic group represented by R₂₁ is preferably an alkyl grouphaving 1 to 22 carbon atoms, or an alkenyl or alkynyl group having 2 to22 carbon atom, and more preferably an alkyl group having 1 to 8 carbonatoms, or an alkenyl or alkynyl group having 3 to 5 carbon atom. Thesegroups may be substituted. Examples of an alkyl group include methyl,ethyl, propyl, iso-propyl, butyl, t-butyl, 2-ethylhexyl, decyl, dodecyl,octyl and cyclohexyl. Examples of an alkenyl group include allyl andbutenyl. Examples of an alkynyl group include propargyl and butynyl.

An aromatic group represented by R₂₁ is preferably an aromatic grouphaving 6 to 20 carbon atoms, and more preferably an aromatic grouphaving 6 to 10 carbon atoms. These groups may be substituted. Specificexamples of these groups include a phenyl group, a p-tolyl group and anaphthyl group.

A heterocyclic group represented by R₂₁ is preferably a heterocyclicgroup having 3 to 15 carbon atoms and more preferably a 5- or 6-memberednitrogen containing heterocyclic group. Specific examples thereofinclude a pyrrolidine ring, a piperazine ring, a pyridine ring, atetrahydrofuran ring, a thiophene ring, an oxazole ring, an imidazolering, a benzothiazole ring, a tellurazole ring, an oxadiazole ring, anda thiadiazole ring.

Of the foregoing group represented by R₂₁, a substituted aromatic grouphaving 6 to 10 carbon atoms is specifically preferred. Examples of asubstituent include an alkyl group (e.g., methyl, ethyl, propyl,pentyl), an alkoxy group (e.g., e.g., methoxy, ethoxy), an aryl group(e.g., phenyl, naphthyl), hydroxy group, a halogen atom, an aryloxygroup (e.g., phenoxy), an alkylthio group (e.g., methylthio, butylthio),an arylthio group (e.g., phenylthio), an acyl group (e.g., acetyl,propionyl), a sulfonyl group (e.g., methylsulfinyl, phenylsulfonyl), anacylamino group (e.g., acetylamino), a sulfonylamino group, an acyloxygroup, carboxy group, cyano group, sulfo group and an amino group.

Specific examples of a thiosulfonic acid usable in the invention areshown below, but are not limited to these.

In the silver halide photographic material of the invention, thelight-insensitive hydrophilic colloid layer preferably contains latex.

Latexes usable in the invention include commonly known polymer latexes.Examples of a preferred polymer include a homopolymer of an acrylic acidalkyl ester or its copolymer with acrylic acid or styrene,styrene-butadiene copolymer, and a polymer comprised of a monomercontaining an active methylene group, a water-solubilizing group or agroup capable of crosslinking with gelatin or its copolymer. To enhanceaffinity with gelatin as a binder, a copolymer of a hydrophobic monomeras a main component such as an acrylic acid alkyl ester or styrene and amonomer containing a water-solubilizing group or a group capable ofcrosslinking with gelatin is specifically preferred.

Preferred examples of a monomer containing a water-solubilizing groupinclude acrylic acid, methacrylic acid, maleic acid,2-acrylamido-2-methylpropanesulfonic acid and styrenesulfonic acid;preferred examples of a monomer containing a group capable ofcrosslinking with gelatin include glycidyl acrylate, glycidylmethacrylate and N-methylolacrylamide.

Polymer latex and its synthetic method are detailed in JP-A No. 2-41,U.S. Pat. Nos. 2,852,386, 2,853,457, 3,411,911, 3,411,912 and 4,197,127;JP-B Nos. 45-5331 and 60-18540 (hereinafter, the term, JP-B refers toJapanese Patent Publication). Examples thereof include a method ofre-dispersing a polymer obtained by emulsion polymerization or solutionpolymerization.

In emulsion polymerization, for example, water is used as a dispersingmedium, and monomers of 10% to 50% by weight, based on water, apolymerization initiator of 0.05% to 5% by weight, based on monomer anda dispersing agent of 0.1% to 20% by weight, based on monomer are usedand polymerization is performed at 30° to 100° C., preferably 60° to 90°C. over a period of 3 to 8 hr, while stirring.

Examples of a polymerization initiator include a water-soluble peroxideand a water-soluble azo compound. Dispersing agents include, in additionto water-soluble polymers, for example, an anionic surfactant, nonionicsurfactant, cationic surfactant and amphoteric surfactant, and thesesurfactants may be used alone or in their combination.

Specific examples of preferred polymer latexes usable in the inventionare shown below but are not limited to these.

The Tg (glass transition temperature)of a polymer forming a polymerlatex usable in the invention is preferably not more than 40° C. The Tgof polymers can be referred in “Polymer Handbook” (1966, published byWirey & Sons). The Tg (° K) of a copolymer can be represented by thefollowing equation:Tg (copolymer)=v ₁ Tg ₁ +v ₂ Tg ₂ . . . v _(w) Tg _(w)wherein v₁, v₂, . . . v_(w) each represent a weight fraction of amonomer(s) of a copolymer; Tg₁, Tg₂, . . . T_(w) each represent a Tg) °K) of a homopolymer of the copolymer. The precision of Tg calculated bythe foregoing equation is within ±5° C.

Any one of polymer latexes having an average particle size of 0.5 to 300μm is suitably usable in the invention. The average particle size of apolymer latex can be determined by an electron micrograph method, a soaptitration method, a light scattering method, and a centrifugalsedimentation method, as described in “Kobunshi-latex no Kagaku”(Chemistry of Polymer Latex, 1973, edited by Kobunshikankokai), and ofthese methods, a light scattering method is preferred. The molecularweight of a polymer is not specifically limited but the overallmolecular weight is preferably from 1,000 to 1,000,000.

In the silver halide photographic material of the invention, thelight-insensitive hydrophilic colloid layer preferably contains alipophilic compound dispersion. The lipophilic compound dispersionrefers to a dispersion of a compound exhibiting a solubility of not morethan 3 g, preferably, not more than 1 g per 100 g of distilled water.The lipophilic compound usable in the invention is preferably awater-insoluble high-boiling organic compound, and more preferably anorganic solvent exhibiting a boiling point of not less than 300° C. ismore preferred. Herein, the boiling point refers to one at 101 kPa, anda high boiling solvent exhibiting a vapor pressure of not more than 66Pa at 100° C. is preferred.

Examples of a water-insoluble high-boiling organic compound includephthalic acid esters, phosphoric acid esters, fatty acid esters, organicacid amides, ketones and hydrocarbons. Organic compounds H-1 to H-20described in on page 34 of JP-A No. 1-156748 are also usable.

High boiling organic compound usable in the invention are preferablyorganic compounds having at least 20 carbon atoms (which may be branchedor substituted by a substituent), more preferably organic compoundshaving at least 24 carbon atoms (which may be branched or substituted bya substituent), and saturated hydrocarbon compound (which may bebranched or substituted by a substituent) are still more preferred andparaffins are specifically preferred.

Specific examples of a lipophilic compound are shown below but theinvention is not limited to these.

O-1 di-n-octylphthalate

O-2 di-i-decylphthalate

O-3 di-n-nonylphosphate

O-4 di [ω-butyl-di (ethyloxy)] adipate

O-5 O-1 di-n-octylsebacate

O-6 glycerin triacetate

O-7 di-n-octylfumarate

O-8 trioctyl-trimeritate

O-9 tridecylphosphate

O-10 trioctyl-phosphineoxide

O-11 n-hexadecane

O-12 n-icosane

O-13 docasane

O-14 n-tetracosane

O-15 n-hexacosane

O-16 Sansocizer E-200 (Shinippon Rika Co., Ltd.)

O-17 Sansocizer E-1500A (Shinippon Rika Co., Ltd.)

O-18 liquid paraffin No. 150-S (Sanko Kagaku Kogyo Co., Ltd.)

The foregoing lipophilic compounds may be used alone or in theircombination. The lipophilic compound, together with commonly knownorganic solvents or water-soluble organic solvents is emulsified in ahydrophilic binder such as an aqueous gelatin solution, using adispersing means, such as a mixer, a homogenizer, a colloid mill, aflow-jet mixer, or an ultrasonic homogenizer and then incorporated tothe objective hydrophilic colloid layer.

The lipophilic compound is incorporated preferably in an amount of 5% to200%, more preferably 10% to 100% by weight, based on a coating weightof a binder contained in the light-insensitive hydrophilic colloidlayer.

In the silver halide photographic material of the invention, thelight-insensitive hydrophilic colloid layer preferably contains atitanium oxide. Commonly known titanium oxides include three kinds ofdi-, tri- and tetra-valent as the valence number of titanium; apreferred compound used in the invention is preferably tetra-valenttitanium oxide and specific examples thereof include rutile typetitanium oxide, anatase type titanium oxide and their mixture. Titaniumoxide usable in the invention can be synthesized by conventionally knownmethods or effects of the invention can be accomplished by the use ofcommercially available compounds. As a mean for synthesis, for example,titanium or titanic acid is strongly heated, vaporized to gas andsprayed while exposed to steam, whereby fine-particulate titanium oxidecan be obtained.

Although non-treated titanium oxide which has not been subjected to asurface treatment may be employed, there may also be employed asurface-treated titanium oxide which has been surface-treated withvarious inorganic compounds such as aluminum hydroxide, silicon dioxide,zirconium oxide or magnesium hydroxide; a surface-treated titanium oxidewhich has been with various organic compounds such as alcohols,surfactants, siloxane or silane coupling agents; and a titanium oxidewhich has been subjected to an organic surface treatment and aninorganic surface treatment in combination.

In the silver halide photographic material, the light-insensitivehydrophilic colloid layer preferably contains colloidal silver and blackcolloidal silver is specifically preferred.

Of the foregoing colloidal silver, for example, black colloidal silvercan be obtained in such a manner that silver nitrate is reduced in thepresence of a reducing agent such as hydroquinone, phenidone, ascorbicacid, pyrogallol or dextrin under alkaline conditions, then, neutralizedand cooled to set gelatin, thereafter, the reducing agent or unwantedsoluble salts are removed by a noodle washing method. When reduced underalkaline conditions, preparing colloidal silver particles in thepresence of an azaindene compound or a mercapto compound results in auniform particulate colloidal silver dispersion.

To enhance effects of the invention, colloidal silver is incorporatedpreferably in an amount of at least 0.02 g/m², more preferably at least0.05 g/m², and still more preferably at least 0.10 g/m².

In addition to the foregoing constitution, it is preferred that thelight-sensitive layer closest to the support is a blue-sensitive layer,which contains silver halide grains having an average grain size of 0.35to 60 μm.

In the invention, specifically, enhanced sharpness can be achieved bythe lowest constituent layer as defined above.

In addition to the foregoing, constituent elements usable in theinvention include, for example, a silver halide emulsion, additives foremulsion, a sensitization method, an antifoggant, a stabilizer, anantiirradiation dye, a fluorescent brightener, an yellow coupler, amagenta coupler, a cyan coupler, a sensitizing dye, a emulsiondispersing method, a surfactant, an antistaining agent, a binder, ahardener, a lubricant, a matting agent, a support, a blueing orred-coloring agent, a coating method, an exposure method, a colordeveloping agent and processing agents, which are also included ascompounds and methods described in from paragraph No. 0044 at line 22 ofright column on page 9 to paragraph No. 0106 at line 17 of right columnon page 14 of JP-A No. 11-347615.

Next, the present invention will be described based on examples butembodiments of the invention are by no means limited to these.

EXAMPLE 1

Preparation of Silver Halide Photographic Material Preparation of Sample101

There was prepared a support A laminated, on both sides of paper supportof a weight of 170 g/m², with polyethylene, provided that the side to becoated with an emulsion layer was laminated with polyethylene meltcontaining surface-treated anatase type titanium oxide in an amount of15% by weight and the opposite side of the paper support to the emulsionlayer was laminated with polyethylene at 25 g/m². The support A wassubjected to corona discharge and further thereon, the followingcomponent layers were provided to prepare a silver halide photographicmaterial sample 101.

Preparation of Coating Solution

1st Layer coating solution:

To 23.4 g of yellow coupler (Y-1), 3.34 g of dye image stabilizer(ST-1), 3.34 goof dye image stabilizer (ST-2), 3.34 g of dye imagestabilizer (ST-5), 0.34 g of antistaining agent (HQ-1), 5.0 g of imagestabilizer A, 3.33 g of high boiling organic solvent (DBP) and 1.67 g ofhigh boiling solvent (DNP) was added 60 ml of ethyl acetate. Using anultrasonic homogenizer, the resulting solution was dispersed in 220 mlof an aqueous 10% gelatin solution containing 7 ml of an aqueous 20%surfactant (SU-1) solution to obtain a yellow coupler dispersion. Theobtained dispersion was mixed with a blue-sensitive silver halideemulsion prepared as below to prepare a 1st layer coating solution. 2ndto 7th layer coating solution:

Coating solutions for the 2nd layer to 7th layer were each preparedsimilarly to the 1st layer coating solution, and the respective coatingsolutions were coated so as to have a coating amount as shown below.Constitution of sample 101: g/m² 7th Layer (Protective layer) Gelatin1.00 DBP 0.002 DIDP 0.002 Silicon dioxide 0.003 6th Layer (UV absorbinglayer) Gelatin 0.40 AI-1 0.01 UV absorbent (UV-1) 0.12 UV absorbent(UV-2) 0.04 UV absorbent (UV-3) 0.16 Antistaining agent (HQ-5) 0.04 PVP0.03 5th Layer (Red-sensitive layer) Gelatin 1.30 Red-sensitive emulsion(Em-R) 0.21 Cyan coupler (C-1) 0.25 Cyan coupler (C-2) 0.08 Dye imagestabilizer (ST-1) 0.10 Antistaining agent (HQ-1) 0.004 DBP 0.10 DOP 0.204th Layer (UV absorbing layer) Gelatin 0.94 UV absorbent (UV-1) 0.28 UVabsorbent (UV-2) 0.09 UV absorbent (UV-3) 0.38 AI-1 0.02 Antistainingagent (HQ-5) 0.10 3rd Layer (Green-sensitive layer) Gelatin 1.30 AI-20.01 Green-sensitive Emulsion (Em-G) 0.14 Magenta coupler (MI-1) 0.20Dye image stabilizer (ST-3) 0.20 Dye image stabilizer (ST-4) 0.17 DIDP0.13 DBP 0.13 2nd Layer (Interlayer) Gelatin 1.20 AI-3 0.01 Antistainingagent (HQ-2) 0.03 Antistaining agent (HQ-3) 0.03 Antistaining agent(HQ-4) 0.05 Antistaining agent (HQ-5) 0.23 DIDP 0.04 DBP 0.02 Brightener(W-1) 0.10 1st Layer (Blue-sensitive layer) Gelatin 1.20 Blue-sensitiveEmulsion (Em-B) 0.26 Yellow coupler (Y-1) 0.70 Dye image stabilizer(ST-1) 0.10 Dye image stabilizer (ST-2) 0.10 Antistaining agent (HQ-1)0.01 Image stabilizer (ST-5) 0.10 Image stabilizer A 0.15 DNP 0.05 DBP0.10 Support Polyethylene-laminated paper (containing a slight amount ofcolorant)

The amount of silver halide was represented by an equivalent convertedto silver. Additives used in sample 101 are as follows.

SU-1: Sodium tri-I-propylnaphthalenesulfonate

SU-2: Sodium di-(2-ethylhexyl) sufosuccinate

DBP: Dibutyl phthalate

DNP: Dinonyl phthalate

DOP: Dioctyl phthalate

DIDP: Diisodecyl phthalate

PVP: Polyvinylpyrrolidone

H-A: 2,4-Dichloro-6-hydroxy-s-triazine sodium salt

HQ-1: 2,5-Di-t-octylhydroquinone

HQ-2: 2,5-Di-sec-dodecylhydroquinone

HQ-3: 2,5-Di-sec-tetradecylhydroquinone

HQ-4: 2-sec-Dodecyl-5-sec-tetradecylhydoquinone

HQ-5: 2,5-Di(1,1-dimethyl-4-hexyloxycarbonyl)-butylhydroqinone

Image stabilizer A: p-t-Octylphenol

To each of the foregoing coating solutions, surfactant (SU-2) was addedas a coating aid to adjust surface tension.

Preparation of blue-sensitive silver halide emulsion

To 1 liter of aqueous 2% gelatin solution kept at 40° C. weresimultaneously added the following solutions (A) and (B) over a periodof 30 min., while being maintained at a pAg of 7.3 and pH of 3.0, andfurther thereto were added solutions (C) and (D) for a period of 180min., while being maintained at a pAg of 8.0 and pH of 5.5. The pAg wascontrolled according to the method described in JP-A No. 59-45437 andthe pH was controlled using aqueous sulfuric acid or sodium hydroxidesolution. Solution A Sodium chloride 3.42 g Potassium bromide 0.03 gWater to make 200 ml Solution B Silver nitrate 10 g Water to make 200 mlSolution C Sodium chloride 102.7 g K₂IrCl₆ 4 × 10⁻⁸ mol/mol Ag K₄Fe(CN)₆2 × 10⁻⁵ mol/mol Ag Potassium bromide 1.0 g Water to make 600 mlSolution D Silver nitrate 300 g Water to make 600 ml

After completing the addition, the resulting emulsion was desalted usinga 5% aqueous solution of Demol N (produced by Kao-Atlas) and aqueous 20%magnesium sulfate solution, and re-dispersed in a gelatin aqueoussolution to obtain a monodisperse cubic grain emulsion (EMP-1) having anaverage grain size of 0.71 μm, a coefficient of variation of grain sizeof 0.07 and a chloride content of 99.5 mol %. Monodisperse-cubic grainemulsions, EMP-1) having an average grain size of 0.64 μm, a coefficientof variation of grain size of 0.07 and a chloride content of 99.5 mol %was prepared similarly to EMP-1, provided that the addition time ofSolutions A and B and the addition time of Solutions C and D wererespectively varied.

The thus obtained emulsion, EMP-1 was chemically sensitized at 60 ° C.using the following compounds. Similarly, emulsion EMP-1B was chemicallysensitized. These emulsions EMP-1 and EMP-1B were blended in a ratio of1:1 to obtain a blue-sensitive silver halide emulsion (Em-B). Sodiumthiosulfate 0.8 mg/mol AgX Chloroauric acid 0.5 mg/mol AgX StabilizerSTAB-1 3 × 10⁻⁴ mol/mol AgX Stabilizer STAB-2 3 × 10⁻⁴ mol/mol AgXStabilizer STAB-3 3 × 10⁻⁴ mol/mol AgX Sensitizing dye BS-1 4 × 10⁻⁴mol/mol AgX Sensitizing dye BS-2 1 × 10⁻⁴ mol/mol AgXPreparation of Green-Sensitive silver halide Emulsion

Monodisperse cubic grain emulsion, EMP-2 having an average grain size of0.40 μm, a coefficient of variation of grain size of 0.08 and a chloridecontent of 99.5 mol % was prepared similarly to EMP-1, provided that theaddition time of Solutions A and B and the addition time of Solutions Cand D were respectively varied. Monodisperse cubic grain emulsion,EMP-2B having an average grain size of 0.50 μm, a coefficient ofvariation of grain size of 0.08 and a chloride content of 99.5 mol % wasprepared similarly to EMP-1, provided that the addition time ofSolutions A and B and the addition time of Solutions C and D wererespectively varied.

The thus obtained emulsion, EMP-2 was chemically sensitized at 55° C.using the following compounds. Similarly, emulsion EMP-2B was chemicallysensitized. These emulsions EMP-2 and EMP-2B were blended in a ratio of1:1 to obtain a blue-sensitive silver halide emulsion (Em-G). Sodiumthiosulfate 1.5 mg/mol AgX Chloroauric acid 1.0 mg/mol AgX StabilizerSTAB-1 3 × 10⁻⁴ mol/mol AgX Stabilizer STAB-2 3 × 10⁻⁴ mol/mol AgXStabilizer STAB-3 3 × 10⁻⁴ mol/mol AgX Sensitizing dye GS-1 4 × 10⁻⁴mol/mol AgXPreparation of Red-Sensitive silver halide Emulsion

Monodisperse cubic grain emulsions, EMP-3 having an average grain sizeof 0.40 μm, a coefficient of variation of grain size of 0.08 and achloride content of 99.5 mol % was prepared similarly to EMP-1, providedthat the addition time of Solutions A and B and the addition time ofSolutions C and D were respectively varied. Monodisperse cubic grainemulsions, EMP-3B having an average grain size of 0.38 μm, a coefficientof variation of grain size of 0.08 and a chloride content of 99.5 mol %was prepared similarly.

The thus obtained emulsion, EMP-3 was chemically sensitized at 60° C.using the following compounds. Similarly, emulsion EMP-3B was chemicallysensitized. These emulsions EMP-3 and EMP-3B were blended in a ratio of1:1 to obtain a red-sensitive silver halide emulsion (Em-R). Sodiumthiosulfate 1.8 mg/mol AgX Chloroauric acid 2.0 mg/mol AgX StabilizerSTAB-1 3 × 10⁻⁴ mol/mol AgX Stabilizer STAB-2 3 × 10⁻⁴ mol/mol AgXStabilizer STAB-3 3 × 10⁻⁴ mol/mol AgX Sensitizing dye RS-1 1 × 10⁻⁴mol/mol AgX Sensitizing dye RS-2 1 × 10⁻⁴ mol/mol AgXStabilizer STAB-1: 1-(3-acetoamidophenyl)-5-mercaptotetrazoleStabilizer STAB-2: 1-phenyl-5-mercaptotetrazoleStabilizer STAB-3: 1-(4-ethoxyphenyl)-5-mercaptotetrazole

To the red-sensitive emulsion, SS-1 was added in an amount of 2.0×10⁻³mol per mol of silver halide.

In the preparation of sample 101, hardener H-A was added to the 7thlayer in an amount of 83 mg/m².

Preparation of Sample 102

Sample 102 was prepared similarly to sample 101, except that the supportA was replaced by support B in which the light-sensitive layer side ofthe support was laminated by polyethylene of 20 g/m².

Preparation of Sample 103

Sample 103 was prepared similarly to the foregoing sample 102, exceptthat a light-insensitive hydrophilic colloid layer comprised of gelatinin an amount of 0.7 g/m² (hereinafter, also denoted as 0-layer) wasprovided between the support B and the 1st layer, blue-sensitive layer.

Preparation of Samples 104 to 109

Samples 104 to 109 were prepared similarly to the foregoing sample 103,except that a compound described below was added to the 0-layer.

Sample 104: exemplified compound I-4 (mercapto-heterocyclic compound)was added in an amount of 7×10⁻⁴ mol per mol of blue-sensitive silverhalide emulsion of the 1st layer;

Sample 105: exemplified compound II-1 (thiosulfonic acid compound) wasadded in an amount of 7×10⁻⁴ mol per mol of blue-sensitive silver halideemulsion of the 1st layer;

Sample 106: exemplified compound LA-1 (latex) was added in an amount of0.07/m²;

Sample 107: exemplified compound 0-18 (liquid paraffin) was added in anamount of 0.07/m²;

Sample 8: anatase type titanium oxide (average particle size: 0.2 μm)was added in an amount of 0.07/m²;

Sample 109: a dispersion of black colloidal silver was added in a silveramount of 0.7 g/m²;

Preparation of Sample 110

Sample 110 was prepared similarly to sample 103, except thatmonodisperse cubic grain emulsion EMP-1B (average grain size of 0.64 μm)was replaced by monodisperse cubic grain emulsion EMP-1C (average grainsize of 0.45 μm).

Evaluation of Silver Halide Photographic Material

Thus prepared samples 101 to 110 were each evaluated in the followingmanner.

Evaluation of Image Clarity

Samples were each exposed to white light and processed in process A andthe obtained black prints were each cut to a L-size having a length of89 mm in the machine direction of the base paper and a length of 127 mmvertical to the machine direction, and an image clarity was determinedusing 1.0 mm optical wedge, by an image clarity measurement apparatus(produced by Suga Shikenki Co.,) based on JIS K 7105. It was proved thathigher image clarity indicates higher glossiness.

Evaluation of Fingerprint Resistance

Fingerprints were randomly adhered with a forefinger onto five portionsof each of the prints used in the evaluation of image clarity andadherence of fingerprints onto the print surface was evaluated based onthe following criteria:

A: no fingerprint was observed when looking from right above the print,

B: no fingerprint was observed when looking from right above the printbut fingerprints were evident when looking at varying viewing angles,

C: fingerprints were apparent even when looking from right above aprint.

Evaluation of Long-term Storage Stability

Samples were allowed to stand for 3 weeks under an environment of 40° C.and 40% RH and samples were also aged for 3 weeks in a freezer.Thereafter, both samples, without photographic exposure were processedaccording to process A described below. Using an X-rite 310 densitometer(produced by X-rite Corp.), processed samples were measured with respectto yellow density (fog density) to determine the difference in density(AD) between a sample aged for 3 weeks at 40° C. and 40% RH and a sampleaged in a freezer for 3 weeks. A greater value (AD) indicates poorerstorage stability.

Evaluation of Pressure Resistance

Samples were each cut to a 35 mm lateral and 140 mm long size. Using ascratch tester (HEIDON 18-Type, produced by Shinto Kagaku Co., Ltd.), aconstant load of 25 g, 30 g, 35 g, 40 g, 45 g or 50 g was applied toeach sample in a darkroom, in accordance with a defined manner and thenprocessed in process A, without being exposed to light. Afterprocessing, the load at which a yellow streak pressure mark wasproduced, was read. A greater load to produce the pressure markindicates superior pressure resistance. The needle used therein was a0.1 mm diamond needle. Process A Processsing Step Temperature Time Repl.Amt.* Color developing 38.0 ± 0.3° C. 45 sec.  80 ml Bleach-fixing 35.0± 0.5° C. 45 sec. 120 ml Stabilizing 30-34° C. 60 sec. 150 ml Drying60-80° C. 30 sec.*Replenishing amount

Composition of processing solution is shown below. Color developer (Tanksolution, Replenisher) Tank soln. Replenisher Water 800 ml 800 mlTriethylenediamine 2 g 3 g Diethylene glycol 10 g 10 g Potassium bromide0.01 g — Potassium chloride 3.5 g — Potassium sulfite 0.25 g 0.5 gN-ethyl-N(β-methanesulfonamidoethyl)- 6.0 g 10.0 g3-methyl-4-aminoaniline sulfate N,N-diethylhydroxyamine 6.8 g 6.0 gTriethanolamine 10.0 g 10.0 g Sodium diethyltriaminepentaacetate 2.0 g2.0 g Brightener (4,4′-diaminostilbene- 2.0 g 2.5 g disulfonatederivative) Potassium carbonate 30 g 30 g

Water is added to make 1 liter, and the pH of the tank solution andreplenisher were respectively adjusted to 10.10 and 10.60 with sulfuricacid or potassium hydroxide. Bleach-fixer (Tank solution, Replenisher)Diethylenetriaminepentaacetic acid 65 g iron (III) ammonium saltdihydrate Diethylenetriaminepentaacetic acid 3 g Ammonium thiosulfate(70% aqueous solution) 100 ml 2-Amino-5-mercapto-1,3,4-thiadiazole 2.0 gAmmonium sulfite (40% aqueous solution) 27.5 ml

Water is added to make 1 liter, and the pH is adjusted to 5.0.Stabilizer (Tank solution, Replenisher) o-Phenylphenol 1.0 g5-Chloro-2-methyl-4-isothiazoline-3-one 0.02 g 2-Methyl-4-isothiazoline-3-one 0.02 g  Diethylene glycol 1.0 gBrightener (Chinopal SFP) 2.0 g 1-Hydroxyethylidene-1,1-diphosphonicacid 1.8 g Bismuth chloride (45% aqueous solution) 0.65 g  Magnesiumsulfate hepta-hydrate 0.2 g Polyvinyl pyrrolidone 1.0 g Ammonia water(25% aqueous 2.5 g ammonium hydroxide solution) Trisodiumnitrilotriacetate 1.5 g

Water is added to make 1 liter, and the pH is adjusted to 7.5 withsulfuric acid or ammonia water.

The thus obtained results are shown blow. Image Storage Pressure SampleClarity Fingerprint Stability Resisttance No. (C value) Resistance (ΔD)(g) Remark 101 70 C 0.010 30 Comp. 102 44 B 0.011 25 Comp. 103 46 B0.006 40 Inv. 104 46 A 0.002 45 Inv. 105 47 B 0.002 45 Inv. 106 46 B0.005 45 Inv. 107 46 A 0.005 45 Inv. 108 47 B 0.006 40 Inv. 109 47 B0.006 40 Inv. 110 46 B 0.002 50 Inv.

EXAMPLE 2

Samples prepared in Example 1 were evaluated similarly, provided thatthe following process B was used in place of the process A. Process BProcesssing step Temperature Time Repl. Amt.* Color developing 38.0 ±0.3° C. 22 sec. 81 ml Bleach-fixing 35.0 ± 0.5° C. 22 sec. 54 mlStabilizing 30-34° C. 25 sec. 150 ml  Drying 60-80° C. 30 sec.*Replenishing amount

Composition of Processing Solution Color developer (Tank solution,Replenisher) Tank soln. Replenisher Water 800 ml 800 ml Diethyleneglycol 10 g 10 g Potassium bromide 0.01 g — Potassium chloride 3.5 g —Potassium sulfite 0.25 g 0.5 g N-ethyl-N(β-methanesulfonamidoethyl)- 6.5g 10.5 g 3-methyl-4-aminoaniline sulfate N,N-diethylhydroxyamine 3.5 g6.0 g N,N-bis(2-sulfoethyl)hydroxylamine 3.5 g 6.0 g Triethanolamine10.0 g 10.0 g Sodium diethyltriaminepentaacetate 2.0 g 2.0 g Brightener(4,4′-diaminostilbene- 2.0 g 2.5 g disulfonate derivative) Potassiumcarbonate 30 g 30 g

Water is added to make 1 liter, and the pH of the tank solution andreplenisher were adjusted to 10.10 and 10.60, respectively, withsulfuric acid or potassium hydroxide. Bleach-fixer (Tank solution,Replenisher) Tank soln. Replenisher Ammonium ferric diethyltriamine- 100g 50 g pentaacetate dihydrate diethyltriaminepentaacetic acid 3 g 3 gAmmonium thiosulfate 200 ml 100 ml (70% aqueous solution)2-Amino-5-mercapto- 2.0 g 1.0 g 1,3,4-thiadiazole Ammonium sulfite 50 ml25 ml (40% aqueous solution)

Water is added to make 1 liter, and the pH is adjusted to 7.0 withpotassium carbonate or glacial acetic acid. Stabilizer (Tank solution,Replenisher) o-Phenylphenol 1.0 g5-Chloro-2-methyl-4-isothiazoline-3-one 0.02 g2-Methyl-4-isothiazoline-3-one 0.02 g Diethylene glycol 1.0 g Brightener(Chinopal SFP) 2.0 g 1-Hydroxyethylidene-1,1-diphosphonic acid 1.8 g PVP1.0 g Ammonia water (25% aqueous 2.5 g ammonium hydroxide solution)Ethylenediaminetetraacetic acid 1.0 g Ammonium sulfite (40% aqueoussolution) 10 ml

Water is added to make 1 liter, and the pH is adjusted to 7.5 withsulfuric acid or potassium hydroxide.

As a result of evaluation of the foregoing, it was proved that,similarly to Example 1, inventive samples were superior in imageclarity, fingerprint resistance, long-term storage stability andpressure resistance to comparative samples.

EXAMPLE 3

Samples prepared in Example 1 were subjected to running process inprocess of CPK-2-J1 using an automatic processor, NPS-868J, produced byKonica Corp. and processing chemicals, ECO JET-P and evaluated similarlyto Example 1, with respect to image clarity, fingerprint resistance,long-term storage stability and pressure resistance. As a result, it wasproved that inventive samples were superior in any of characteristics tocomparative samples.

EXAMPLE 4

Samples 101, 102, 108 and 109 of Example 1 were evaluated with respectto sharpness in the following manner.

Evaluation of Sharpness

Resolving power test chart was printed through red light onto each ofthe samples and processed in the foregoing process A. Thus obtained cyanimages were subjected to densitometry using microdensitometer PDM-5D(produced by Konica Corp.) and the value represented by the followingequation was defined as sharpness:Sharpness (%)=[(D _(max) −D _(min)) of closed-line print image of 3line/mm]/[(D _(max) −D _(min)) of large area]Evaluation Result of Sharpness

Evaluation result of sharpness of each sample are as follows:

Sample 101 (Comp.): 0.680

Sample 102 (Comp.): 0.669

Sample 108 (Inv.): 0.731

Sample 108 (Inv.): 0.745

INDUSTRIAL APPLICABILITY

According to the constitution of the present invention, there can beprovided a silver halide photographic material having a paper supportwhich is coated with resin coat layers on both sides of a base paper,and in particular, to a silver halide photographic material exhibitingsuperior glossiness and improved sharpness, long-term stability,fingerprint resistance and pressure resistance.

1. A silver halide photographic material comprising on one side of apaper support having resin coat layers on both sides of a base paper oneor more light-sensitive layers and one or more light-insensitive layers,wherein after the photographic material of an L-size (having a length of89 mm in a machine direction of the base paper and a length of 127 mmvertical to the machine direction) is processed, the photographicmaterial exhibits an image clarity (C-value) of 20% to 60% which isdetermined using a 1.0 mm optical wedge in accordance with JIS K 7105;and the photographic material comprising a light-insensitive hydrophiliccolloid layer between a light-sensitive layer closest to the support andthe support.
 2. The silver halide photographic material as claimed inclaim 1, wherein the light-insensitive hydrophilic colloid layercontains a mercapto-heterocyclic compound.
 3. The silver halidephotographic material as claimed in claim 1, wherein thelight-insensitive hydrophilic colloid layer contains a thiosulfonic acidcompound.
 4. The silver halide photographic material as claimed in claim1, wherein the light-insensitive hydrophilic colloid layer contains alatex.
 5. The silver halide photographic material as claimed in claim 1,wherein the light-insensitive hydrophilic colloid layer contains alipophilic compound dispersion.
 6. The silver halide photographicmaterial as claimed in claim 1, wherein the light-insensitivehydrophilic colloid layer contains a titanium oxide.
 7. The silverhalide photographic material as claimed in claim 1, wherein thelight-insensitive hydrophilic colloid layer contains a colloidal silver.8. The silver halide photographic material as claimed in claim 1,wherein the light-sensitive layer closest to the support is ablue-sensitive layer containing silver halide grains having an averagegrain size of 0.35 to 0.60 μm.
 9. The silver halide photographicmaterial as claimed in claim 2, wherein the light-sensitive layerclosest to the support is a blue-sensitive layer containing silverhalide grains having an average grain size of 0.35 to 0.60 μm.
 10. Thesilver halide photographic material as claimed in claim 3, wherein thelight-sensitive layer closest to the support is a blue-sensitive layercontaining silver halide grains having an average grain size of 0.35 to0.60 μm.
 11. The silver halide photographic material as claimed in claim4, wherein the light-sensitive layer closest to the support is ablue-sensitive layer containing silver halide grains having an averagegrain size of 0.35 to 0.60 μm.
 12. The silver halide photographicmaterial as claimed in claim 5, wherein the light-sensitive layerclosest to the support is a blue-sensitive layer containing silverhalide grains having an average grain size of 0.35 to 0.60 μm.
 13. Thesilver halide photographic material as claimed in claim 6, wherein thelight-sensitive layer closest to the support is a blue-sensitive layercontaining silver halide grains having an average grain size of 0.35 to0.60 μm.
 14. The silver halide photographic material as claimed in claim7, wherein the light-sensitive layer closest to the support is ablue-sensitive layer containing silver halide grains having an averagegrain size of 0.35 to 0.60 μm.